Improvement in stuffing-boxes for engines



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Letters Patent No. 111,330, dated January 31, 1871.

lMPROVEMEN'T lN STUFFlNG-BOXES'FOR ENGINES.

The Schedule referred to in these Letters Patent and making part of the same.

'0 all whom-it inc concern:

lie it knoivn that I, JOEL A. H. ELLIS, of Spring field, in the county of \Vindsor and State 01" Vcr-1 moot, liufie invented anew and improved Stuffing- 110x for Engines; and I:- do hereby declare. that the tiillowing is a full, clear, and exact descriptionthereol', which willennble others skilled in the art to make and use the same, reference being had to the accoinpa -iying drawing forming part of this specification. Figure 1 represents a longitudinal section of my improved stuiiing-box. Q

Figure 2 is a transverse section of the same. Similar letters of rcflu'cncc indicate corresponding parts.

i This invention is to prevent the escape'iuto the at- .mosphere of vapor around the piston and valve-rods, and the escape Offlit) fluid from which the vapor is produced around the plunger of theforce-pump that supplies vaper-generators where expensive volatile liquids are employed in the generator of a vapor-engine.

My invention consists in a chamber, tween two striding-boxessurrounding such rod or plunger, and from which chamber a, tube passcs'to a condenser or exhaust-pipe of the engine from the piston and valve-rods, and to the reservoir containing the'iluidi'rom the force-pump.

By this means I am enabled to prevent the escape of the vapor andfluid into the engine-room, and itbecomes unnecessary to pack the stutt ing box as tightly as heretoihre, and hence considerable friction is avoided.

provided be- A in the drawing represents the head ot'a cylinder, or equivalent device, provided with a projecting box, a, into which is fitted a gland, B, compressing the; packing or stuiling at l).

.'.li e, gland B contains an annular vapor-chambet 'g, beyond which it receives another layer, (1, of stujf ting, that is held iuplace by a second gland, G.

berews or bolts 0 c serve to secure the gland B to the head A, while other screws or bolts f hold 0 m B. v j The annular chamber g which surrounds the rod or plunger provided with a-tube, it, that extends froni' the chamber tocthe condenser ot'the; engine or to the exhaust-pipe. I The vapor whicln may have passed by or through the packing l: enters the chamber 9 and passes off by the tube 71-. i 1 The packing (Z rpl-events the steam .or vapor from leaving the chamber 1 except through the tube 71.

The gland O or the metal 0 atO, surroulnling the rod or shni't, may be sufficient without any elastic packing.

Having thus described my' invention,

I claim as new and desire to securcdiy Letters Pat; cnt-- The land oi a stutliiW-box for the rods of a .va JUl'- engine, provided with a. vapor-chamber, 5 and a tube for conveying avqay the escape-vapors, as specilied.

.iii'l'l' jli A. ll. lilil 't-.

\Vitnesses:

T. 1%. Mosnnn, Arno. W. Munich. 

